Vacuum power circuit breaker

Details Vacuum power circuit breaker Vacuum power circuit breaker

1974-04-01

1976-03-02

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3366

Patent

active

039419606

ABSTRACT:
A vacuum power circuit breaker having a vacuum-bulb interrupter unit comprising a vacuum bulb consisting of a cylindrical insulating envelope and end plates attached to the axial ends of the insulating envelope, stationary and movable electrode rods projecting into the vacuum bulb through the end plates, and metallic bellows assemblies connecting the stationary and movable electrode rods to the associated end plates of the vacuum bulb. Not only the movable electrode rod but the stationary electrode rod is thus axially movable relative to the vacuum bulb so that an impact applied to the stationary electrode rod when the movable electrode rod is connected to the stationary electrode rod is absorbed by the stationary electrode rod itself. The stationary electrode rod is held fixed independently of the vacuum bulb to prevent the electrode rod from being moved away from the movable electrode rod when the latter is moved and connected to the former. Means are provided for the purpose of preventing relative rotation between the electrode rods and the vacuum bulb so that the bellows assemblies are protected from being distorted when the stationary electrode rod is fixed to a stationary member.

REFERENCES:
patent: 3129308 (1964-04-01), Yokoyama et al.
patent: 3174019 (1965-03-01), Jansson
patent: 3555223 (1971-01-01), Robinson et al.

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